Home / 206,928,002.70-310,280,029.65-85,771,701.90

Finding the Fourth Proportional to 206,928,002.70, 310,280,029.65 and 85,771,701.90

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Solution

The fourth proportional to 206,928,002.70, 310,280,029.65 and 85,771,701.90 is: 128,611,139.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,928,002.70 : 310,280,029.65 = 85,771,701.90 : x
  2. Step 2: Convert to fraction form
    206,928,002.70/310,280,029.65 = 85,771,701.90/x
  3. Step 3: Cross multiply
    206,928,002.70x = 310,280,029.65 × 85,771,701.90
  4. Step 4: Simplify right side
    206,928,002.70x = 26,613,246,208,662,960
  5. Step 5: Solve for x
    x = 26,613,246,208,662,960/206,928,002.70
  6. Step 6: Final answer
    x = 128,611,139.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.